1) Copper mineral 2) Monoclinic mineral 3) Sulfide mineral
Found on
https://www.crosswordclues.com/clue/pearceite
== Nomenclature == Pearceite and polybasite are closely related minerals that form the pearceite-polybasite series. Originally pearceite was thought to be an arsenic analogue of polybasite Cu(Ag,Cu)6Ag9Sb2S11, and was called arsenpolybasite, and one polytype of polybasite was called antimonpearceite. Arsenpolybasite was found to represent two diff...
Found on
http://en.wikipedia.org/wiki/Pearceite
No exact match found.
